The impatience and eagerness to sample a harvest that took so much effort can make us neglect two fundamental processes: the drying and curing of cannabis. Whether you grow cannabis or CBD buds, resist the temptation to light them up straight away. Taking the time to dry and cure properly is just as decisive as the cannabis strain you choose, the nutrients or your growing conditions.
Why are drying and curing cannabis so important?
More often than not, the first-time grower finds it tedious to dry and cure their flowers, as if it weren't part of the growing ritual. Big mistake: if we want to enjoy top-quality cannabis, these stages are as important as the growing itself.
Why drying matters for bud quality
Drying is essential because, if cannabis doesn't lose much of the water and chlorophyll in its tissues, neither THC, CBD nor any of the cannabinoids develop the right properties for consumption: they stay inactive in their acidic form (THCa, CBDa…). They are activated through decarboxylation, by applying heat (for example, through combustion). And there's more: buds don't decarboxylate their cannabinoids well if they haven't lost enough moisture.
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Why curing matters: flavour, aroma and storage
Curing, although not as indispensable as drying (flowers that have already lost moisture are fit for consumption), is the icing on the cake: it extends drying at an optimal pace, halts the degradation of the flowers, improves their qualities and prevents mould.
How to dry cannabis step by step
The goal of drying is to reduce moisture. Freshly harvested buds have around 75% moisture and you need to bring it down to 15%. How? With these steps:
1. Harvest at the right moment and trim the buds
If you rush or harvest late, it won't matter how well you dry. Harvest when most of the mature trichomes are milky, with a few amber specks, after flushing the roots the week before. Then trim: remove the sugar leaves and inner leaves (they slow drying and give a harsh flavour) with pruning scissors. Decide whether to keep the branches depending on your drying method.
2. Choose the ideal space: darkness, temperature and humidity
A dark, dry, cool and ventilated spot. Temperature between 18 °C and 24 °C and humidity around 50%. Mind the air: it should circulate gently around the flowers, never directly. Above 24 °C the terpenes evaporate and you lose aroma. If your space doesn't meet these conditions, create them with equipment (fans, humidifiers…), although it isn't ideal.
3. Pick the drying method: hanging or drying racks
The two usual techniques: hang the flowers upside down from strings (the cheapest; it helps to have kept the branches) or use vertical multi-tier drying racks (they save space; better to remove the branches). In both cases, don't let the flowers bunch together: leave room for the air to flow so they dry better.
4. Cannabis drying time: 2 to 3 weeks
Ideally wait two to three weeks, depending on the strain, type of grow and conditions. Never speed it up with more heat or less humidity: you'd degrade the properties. If in doubt, curing will help you fine-tune the result.
How to tell when cannabis is dry: the branch-snap test
Buds dry from the outside in, so they'll always feel drier on the outside. Properly dried cannabis is crispy on the outside but still keeps some moisture inside, without crumbling when you squeeze it. The foolproof method is the branch-snap test: bend a small stem; if it cracks and snaps, it's ready; if it bends without breaking, let it dry longer. A duller colour and an aroma less like “fresh grass” also show it's coming along well (another way of telling whether a bud is good quality).
How to cure cannabis step by step
With a good cure you preserve flavours, aromas and cannabinoids such as CBD (all the organoleptic properties). The moisture level should settle at 8-10%. To do this:
- Confirm the drying is correct. If in doubt, repeat the branch-snap test.
- Clean the buds well. If you kept the branches for drying, now you do need to remove them: keep the buds as clean as possible.
- Use proper airtight containers. The usual choice is glass jars with an airtight seal: clean, they preserve well and let you see the state of the flowers. Wooden boxes, ceramic jars or food containers also work. Don't use jars that are too big; if you have a large harvest, split it up.
- Fill the jars to 75%. Leave a little empty space and don't press or bunch the flowers. Seal airtight.
- Keep them in a dark, cool and dry place. Temperature around 20 °C and humidity slightly higher than during drying, about 60%.
- Air them daily (“burping”). For the first week or 10 days, open the jar at least once a day for 5-10 minutes to let it breathe. After that, every 2-3 days is enough. Use the chance to check the flowers: if you see mould, something is wrong.
- Be patient. Curing can last from 2 weeks to 2-3 months (or more), depending on strain and conditions; after 6 months the flowers start to degrade. You'll know they're ready by pressing gently: if they don't crackle or you feel moisture, they aren't cured yet.
How to store cannabis after curing
Once cured, simply keep the flowers in an opaque, well-sealed, vacuum container: that way they last even for years. Avoid light and sudden changes in temperature or humidity. You'll find the details in our guide on how to store cannabis flowers.
Common mistakes and problems when drying and curing
- Drying too fast (heat or direct air): brittle buds and a harsh flavour, with loss of aroma and potency.
- Excess moisture (>65%): risk of mould; discard the affected bud and never smoke it.
- An ammonia smell during curing: a sign of high humidity; air the buds for a few hours before sealing again.
- Over-dried buds: bring back some texture with a piece of citrus peel or a humidity pack, never by wetting them directly.
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